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Title
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Search for signatures of extra dimensions in the diphoton mass spectrum at the large hadron collider
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A search for signatures of extra spatial dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC. No excess of events above the standard model expectation is observed using a data sample collected in proton-proton collisions at root s = 7 TeV corresponding to an integrated luminosity of 2: 2 fb(-1). In the context of the large-extra-dimensions model, lower limits are set on the effective Planck scale in the range of 2.3-3.8 TeV at the 95% confidence level. These limits are the most restrictive bounds on virtual-graviton exchange to date. The most restrictive lower limits to date are also set on the mass of the first graviton excitation in the Randall-Sundrum model in the range of 0.86-1.84 TeV, for values of the associated coupling parameter between 0.01 and 0.10. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y.
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Publication
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New York, N.Y.
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2012
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ISSN
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0031-9007
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Volume/pages
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108
:11
(2012)
, p. 1-16
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Article Reference
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111801
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ISI
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000301345000006
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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